Sensitivity Study of r-process Abundances to Nuclear Masses
X. F. 晓飞 Jiang 姜, X. H. 鑫辉 Wu 吴, P. W. 鹏巍 Zhao 赵
Abstract
Abstract The impact of nuclear mass uncertainties on the r -process abundances has been systematically studied with the classical r -process model by varying the mass of every individual nucleus in the range of ±0.1 to ±3.0 MeV based on six different mass models. A new quantitative relation between the uncertainties of r -process abundances and those of the nuclear masses is extracted, i.e., a mass uncertainty of ±0.5 MeV would lead to an abundance uncertainty of a factor around 2.5. It is found that this conclusion holds true for various mass models.
Topics & Concepts
PhysicsAbundance (ecology)Mass numberRange (aeronautics)Sensitivity (control systems)Nuclear physicsNuclear astrophysicsNuclear reactionNucleusAstrophysicsAtomic massAbundance of the chemical elementsLow MassIsotopeMass formulaMass spectrometryMass spectrumNucleosynthesisNuclear binding energyNatural abundanceAtomic physicsNuclear physics research studiesParticle physics theoretical and experimental studiesGamma-ray bursts and supernovae